#LIBRECAD FILLET SOFTWARE#

FreeCAD is aimed directly at mechanical engineering and product design but also fits in a wider range of uses around engineering, such as architecture or other engineering specialities.

#LIBRECAD FILLET SOFTWARE#

It is free software (GPL & LGPL License). To assemble the table has been necessary to use a rotary tool to smooth the edges of the joints and a mallet for the optimized press-fit.FreeCAD FreeCAD is a general purpose parametric 3D CAD modeler. The control is used to set the zeros and adjust parameters related to process speed and travel speed, and finally, once this is ready, to start the job.

It’s necessary that the tool is firmly installed, this is the one implemented for this job. It is important to make sure everything is well adjusted and tightly attached when working with this big machine. To prepare the CNC machine the steps to follow are: Installing the tool in the collet, attaching the material to the bed using clamps or screws and setting the zeros for all axes. Three files were saved: one for the inside toolpath, one for the outside and one for a general (corresponding to the tabletop). Once the parameters were set up without errors, the tool paths were saved in a USB memory. Select the profile side (inside or outside)

It is a good practice of this lab to check the files with Corel Draw before sending it to CAM software, here I identified other issues to be fixed. The milling machine I used for this assignment is located at Fab Lab Veritas. Once again I tested it with a laser-cut model and there were more things to improve “this is the reason why it is a useful practice” I went back to LibreCAD and changed the design in order to give more stability to the table. The next step was to scale the model to cut it in the laser cutter using cardboard, this is a useful practice because it allowed me to identify some issues related to stability and dog-bones dimensions. The rest of the shapes can be made by mirroring and applying the fillet tool to soften the corners.Ī central piece was added for support of the top part.

Note that the inside corner of the press-fit tab of the legs must also have a bone shape. For this, select the shape and go to Tools > Polyline > Create Polyline from existing segments.Īfter one bone is created, it can be mirrored, copied and/or moved to create the other ones.Ĭorners can be rounded with the fillet tool, and new guide lines can be used to create the second press-fit part on the legs of the table. For this, a semi-circle is drawn on the inner corners of the design, so that the tool will overcut and the joint will fit correctly.Įvery time a shape is finished, it is a good practice to convert to a closed shape (this is for LibreCAD users, not sure about other software). The press-fit joints must be designed with the cnc specifications in mind, mainly the diameter of the tool for the t-bone shapes for the inner angles. Usually, you create another layer with a different color and/or line type. For this I had to know the thickness of the board. I started with a simple rectangle (table top) and drew the rectangles for the press-fit joints. You use basic shapes (points, lines, circles, rectangles, etc.) and apply simple concepts and processes (parallel lines, rotation, intersections, mirrors, etc.) Using LibreCAD is very simple, it is comparable to drawing with pencil and ruler. To design my object for this week, I used LibreCAD, first idea started as a square video game table.

Librecad fillet